Anatomical Variations in the Division and Innervation of the Sciatic Nerve with its Clinical Consequences
Introduction: Commonly encountered peripheral nerve in emergency, trauma, routine surgical medical practice and neurology is Sciatic Nerve (SN). Its vulnerability to injury is because of its thickness and long course. Its vast clinical involvement warrants a more definitive study. So the study...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
JCDR Research and Publications Pvt. Ltd.
2016-07-01
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| Series: | International Journal of Anatomy Radiology and Surgery |
| Subjects: | |
| Online Access: | http://www.ijars.net/articles/PDF/2170/20144_F(GH)_PF1(VsuGH)_PFA(GH)_PF2(VsuGH).pdf |
| Summary: | Introduction: Commonly encountered peripheral nerve in
emergency, trauma, routine surgical medical practice and
neurology is Sciatic Nerve (SN). Its vulnerability to injury is
because of its thickness and long course. Its vast clinical
involvement warrants a more definitive study. So the study
was planned with the following aims and objectives.
Aim: To study the anatomical variations in the division
and innervation of the sciatic nerve and to correlate these
variations with the clinical consequences of the nerve.
Materials and Methods: This study was carried out on 30
lower limbs of human cadavers of Indian origin. The sciatic
nerves of these cadavers were dissected, photographed,
observed, analysed and interpreted in the Department of
Anatomy.
Results: It was found that in 43% of cases division of
sciatic nerve was just below the lower border of piriformis,
in 36%, between the piriformis and the mid of the thigh,
in 14% near the mid of the thigh, in 7%, between midway
of thigh and joint line of the knee and not even in a single
case, the division was found to be, in the pelvis and below
the knee joint line.
Conclusion: Most common site of exit and bifurcation
of SN were found to be just below the piriformis which
is in contradiction to the earlier reports which state apex
of the popliteal fossa to be the most common site of SN
bifurcation. So we emphasize that this fact should also be
there in the mind of concerned surgeons, orthopedicians,
anaesthesiologists and neurophysicians while dealing with
and planning for the pathologies involving SN, not only for
better diagnosis and treatment but also for avoidance of
iatrogenic complications. |
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| ISSN: | 2277-8543 2455-6874 |